Outstanding support! You guys are the best. Totally worth my subscription. Thanks so much.
We've put a fix in for the bug so it should hopefully be working OK now. Thanks again for letting us know about this.
Thanks for flagging this up. It looks like a bug in the latest release of Google's map code and seems to only occur when you drag one of the points on a line rather than a vertex (one of the lighter shaded ones). We're looking into it and trying to find a solution. I'll post back here when we have an update.
Does the same in Firefox Quantum 65.0.1. This happens about 80% of my edits. I've tried expanding the range of the start and finish drag points and that doesn't work either.
When working in drag mode, it continually turns off after a single edit, causing me to have to turn Drag Mode back on after every change. Is this normal? A browser issue? (I'm using Chrrome Version 72.0.3626.119 on macOS High Sierra 10.13.6) It's very frustrating and time consuming.